Steering device for trailers



May 18 1926. 1,585133 H. VAN DER HOF STEERING DEVICE FOR TRAILERS Fi1edMarch 20. 1924 //VVENTOR /1c%mwus Mm DE/F .1%r

PATENT ()FIFEI HERMANUS VAN DER HOF, OF AMSTERDAM, NETI-IERLAIIDS,ASSIG-IQ'OR 'IO NAAMLOOZE VENNOOTSCI-IAP INTERNATIONALE TRC'K & TRAELEI%CO1EITPJ.GNIE (INTERNA- MAATSCEIAI PI'J), OI! AMSTERDAM,

STEERI'NG DEVICE JE'OR TRAILEIRS.

Application filed 1\l[arch 20, 1924:.

This invenfion relates 0 he sceering mechanism 0f braction vehicles witha tw0 whee]ed trniler hinged to the tractor vehicle, thn trailer wheelsbeing sseered together with the steering wheels 0'E the tractor vehicle,und the steeri 11g movement being transferred from the st eering wheelsby 1nezms of a coupling bar and a two-ar1ned lever. Practice has shownthnt the t1niler wheels are undasimbly displaced by the bending 0f Ehesprings, which carry the axle 0f the trailer.

The object 01: the invnntinn is 60 provide an improvement 0f saidsteering mechanism.

In sfeering mechanisn1 of the type described nmde in accordance withthis invnn tion the doub?e 1ever transfers the movement' 0f the steeringwheels directly 01 indirnctly t0 a bar. which is displaceable in 01approximately in its clirection 01 length. T0 said bin is hinged thestee1'ing bar which moves the trniler wheels. This conscruction makes itpossib1e to giwa the bar, which moves the traile1. wheels, such 2Llength, that the banding of the springs by Ehe loaed trafler, whichdisplaces the, ax1e of the trai1er in the rearward diredzion has noundesimb.e influence 011 t-he position of ehe trailer wheols. Th-ewheels cf the trailer o? this kind 0f vehicle are placed 011 an ax1e,Which is sup porte by flat springs. Said springs are hinged at the frontside t0 tho, frame 0'E the vehicle anal the rez1r end 0f the springs isconnected to a link. The ax1e 0f the trailer can therefore only moerearwardly 011 loading the trailer. The displacement 0f the arfle has,by the construction according t0 the invenfion, the result, that the barWhi0h steers the trai?er wheels is menely turned about t-he poin atwhich i is hinged 130 the bar, which is displaceable in its length di-1ecbion; this turning does not resu1t in undesirable displacement of thetrai1er wheels.

The nnnexed dmwings illustrace by way o:f example 0ne form of devioemz1de in accordance with this invention.

Fig. 1 is a side View of a, t1nctor-vehicle with trailer provided Withthe steering mechanism.

Fig. 2 is a perspective view 0f the stenring mechanism.

Fig. 3 is zu plan vlew of Figure l und Fig. 4 is a diagmmnmcical view 0f21 part of the steering mechanism 011 a larger scale.

Serial N0. 700,539.

By menns of the handwheel l the steering whee.s 2 a1e steered in theusual nmnner, wher-eby a the same time the bar 3 moves the d ouble lever4. A bar 5 which is disp0sed so as to he displaceable only in thedirecion 01 its Iengoh, is mounted 1"01 such 1n0vement in fixed guides 9and is hinged t0 an actuating bar interposed between said bar 5 211d onearm 0f the double lever 4. T0 said hat 5 the steering bar 6, for thetrailer wheels is hinged. The bar 6 turns the trailer wheels in anopposite direction to the steering wheels 0f the motor vehicle. Theangth 0f the bar 6 is so chosen *chat 011 displacement 0f the connectionpoint 7 of the bar 6 with the steering appambus of the traile1 whee1,Whll Ehe traiier is loaded, said point Will describe a relatively fiata1c and the bar 6 will tu1n freely about its hinge 8.

What I claim is:

l. A. steering mechanism f01 traction veh'1cles with trailers including,in combinati0n, a steering mechanism 'f01 the wheels of the, vehicle, asteering mechanism f0r ehe UELGI z=.xle, a lever pivotally connected t0the 1frnme 01 thn vehicle and 130 the steering mechanism thereof a barconnecced t0 0ne end of said lver anal movab]e in nhe direction 01 itslength, and a stee1ing bar C011- nct@d ab 0ne end to the steeringmechanism of the trailer arde, said steering bar being 01"' such alength, that the movementof the rear end. thereof cs.used by Ehedisplacement of the trailel axle when the trniler is being loaded, Willbe in an arc having zu relatively flat curmture.

2. A steering mechanism 101 traction vehicles with trailers including,having in combination steering mechanism for the wheels of the vehicle,a lever pivoted intermediate its ends t0 the frame of the vehicle undpivotally connected a; 0ne end t0 the steering mechanism thereof, a bardisplace able on1y in the direction of its 1ength movable in fixedguides, an actuating bar hin *ed at one end to said longitudinally movz:le bar, and a the other end so the other end of said lever, und asteering bar connected at one end with the trailer wheels and pivotallyconnected at the other end with said longitudinally niovnble bar.

3. A steering mechanism for Emotion vehicles with trailers. including,in combina to Said steering bar, the latte1 bar being of 10 ti0n, asteering mechanism f01 the wheels 0f such length that the movement ofthe leu1. the vehicle a steering mechanism for th-e end thereof causedby be displacenxant 016 trailer axle 21 leve1 pivot-ally connected tothe trailer ax1e when ihe trailer is being; the frame of the vehicle andto the steering loaded Will be in an zuc having a rvlativeiy mechanismthereof, a steering bar connected flat curvature. 15 at 0ne end to thesteering mechanism 0f the In testimony whereof I have hereunto 5(3ttraile1 ax1e, and a movab1e bar transmitmy band.

ting the movement of one end of said. lever HERMANS VAN man HOF.

